Real life themes! (everything is better with and exclamation point)

As I ready over the question in the book regarding themes present in this play, one crossed my mind that happens to everyone. Once an idea that you don't want to believe crosses your mind, it grows like a poison and is very difficult to get rid of. This is a timeless theme present in the play. In today's world, spouses will go to extraordinary lengths just to see if their spouses are cheating on them. They may not have any solid proof whatsoever, by since the fear is growing in their mind like a poison, then anything that might faintly resemble proof will appear to them as rock solid proof. In Othello's case, this is what happened. Except for him, Iago acted as his catalyst and kept plaguing Othello's mind little by little so Othello would eventaully go crazy and believe anything that is said about Desdemona cheating on him. This theme has a VERY big effect on the dramatic experience of this play. The poison of jealousy spreads through Othello's mind causing him to start having fits and going into seizures and even striking his wife and planning her death thus rising the drama of the play.